engine speeds at various speeds in various bikes

Discussion in 'Motorbike Technical Discussion' started by Ed, Dec 27, 2003.

  1. Ed

    Ed Guest

    What are some typical highway speed RPMs you experience on your bike at
    various highway speeds [in top gear]? I'm curious about the effects of
    engine size, bike weight and effect of wind resistance. Also, please
    mention if you have a windscreen or not. Thanks all who answer.
     
    Ed, Dec 27, 2003
    #1
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  2. Ed

    bowman Guest

    None of the above have a direct effect on the rpm for a given speed; that is
    strictly the overall ratio for the selected gear and the tire diaameter,
    assuming your clutch isn't slipping.

    The rpm could be roughly anywhere from 4000 to 14000, depending.
     
    bowman, Dec 27, 2003
    #2
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  3. Ed

    Fitchin Guest

    Geez! I've only been watching this newsgroup for a short while (2 months?),
    and you never cease to amaze me Kaybearjr! What don't you know? (I am NOT
    being sarcastic)

    Fitchin


     
    Fitchin, Dec 27, 2003
    #3
  4. Ed

    Kawasakibob Guest

    I am turning 4100 rpm at 70 mph. 2002 Concours, 1000 cc inline 4, 6
    speed transmission and full fairing. 600 lbs bike 200 lbs ridder.
     
    Kawasakibob, Dec 27, 2003
    #4
  5. Surely you ought to be more interested about power and torque outputs,
    at whatever revs, and overall gearing?

    But....

    (at 70mph)

    Trophy 12 - 4000rpm
    750SS - about the same
    400F - 6000rpm
    CD200 - no rev counter fitted but probably about 8000rpm
    ST70 - 30% beyond point of engine disintegration
     
    The Older Gentleman, Dec 27, 2003
    #5
  6. <G>

    You were always the smartarse one in the back of the class, weren't you?
    The one with his hand perpetually in the air?
     
    The Older Gentleman, Dec 27, 2003
    #6
  7. Approximately 2600 rpm at 60 mph. Note that rpm at 60 mph is the number
    of turns the engine makes in one mile.

    Mine's a '74 H-D FLH, but it is geared just a bit lower than stock, i.e.,
    the stock gearing turns the engine a bit faster at this speed.
     
    Matthew Lundberg, Dec 27, 2003
    #7
  8. Ed

    Ed Guest

    Wow, this is some newsgroup - I ask and then come back several hours
    later and I got a lot of interesting answers - thanks a lot, all.
     
    Ed, Dec 27, 2003
    #8
  9. Ed

    Rein Guest

    all three has no effect on the rpm's at a certain speed (for that same
    bike).
    Like my bike, a 900cc sportbike, makes 4000rpm at 60mph in 6th gear.
    It will do this with or without the screen on it, and it will do it
    with a 100lbs person riding it or a 300 pound person riding it.

    Usually the more displacement, the lower the rpm's since you have more
    torque at lower rpm's.
    Remove NO-SPAM from email address when replying
     
    Rein, Dec 28, 2003
    #9
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